Disc type parking braking device

Abstract

The utility model provides a disc type parking braking device, which relates to the field of parking braking and comprises a brake fixing seat, a brake adjusting seat, friction plates, brake pads, a sealing sleeve and an adjusting sleeve, the brake fixing seat, the brake adjusting seat, the sealing sleeve and the adjusting sleeve are sequentially connected, and the two brake pads correspond to the friction plates one by one; the brake adjusting seat is fixed with the brake fixing seat; a brake shaft corresponding to the brake pad is movably arranged in the brake adjusting seat; the sealing sleeve is fixed with the brake adjusting seat, and a slope adjusting shaft is arranged in the sealing sleeve and is connected with a pull wire plate; the end face, making contact with the brake shafts, of the slope adjusting shaft is provided with a slope structure, so that when the slope adjusting shaft rotates along with the action of the wire pulling plate, the two brake shafts can be driven to synchronously and linearly move in the direction facing the friction plates. The braking force can be effectively increased, and the parking braking effect is improved; and the distance between the adjusting sleeve and the sealing sleeve can be adjusted according to requirements, and the adjusting sleeve and the sealing sleeve are fixed again through bolts, so that the brake clearance is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of parking brakes, in particular to a disc type parking brake device suitable for engineering machinery. Background Art

[0002] The disc parking brake device is a braking method for construction machinery. It mainly consists of a clamp device, a brake pad and a brake disc. The principle of disc braking is to use the friction between the brake pad and the brake disc to consume its kinetic energy, thereby achieving braking or deceleration.

[0003] In the prior art, a disc parking brake device is a device in which a rod moves axially, pushing against a piston to move axially, contacting a brake pad, causing the brake pad to clamp a brake disc, thereby achieving braking or deceleration. For example, in the utility model patents with announcement numbers CN214945908U and CN209638286, a single brake shaft is used to drive the brake assembly to implement braking, which is also a conventional setting for brake drive in the current field.

[0004] However, such a structure based on a single brake shaft has a problem of low braking force in actual operation, especially when applied to construction machinery, which results in poor braking effect. In addition, such a parking brake structure also has a problem of difficult adjustment of the brake clearance. Utility Model Content

[0005] The utility model aims to solve the above problems in the prior art and provides a disc parking brake device with strong braking force and good braking effect, and at the same time, the braking clearance can be easily adjusted to ensure the braking effect.

[0006] The utility model solves the above technical problems with the following technical solutions: a disc parking brake device, comprising a brake fixing seat, a brake adjusting seat, a friction plate fixedly mounted on the brake fixing seat, and a brake plate movably mounted on the brake adjusting seat, characterized in that it also comprises a sealing sleeve and an adjusting sleeve, wherein the brake fixing seat, the brake adjusting seat, the sealing sleeve, and the adjusting sleeve are connected in sequence, and two brake plates are provided and correspond to the friction plates one by one;

[0007] The brake adjustment seat is fixed to the brake fixing seat, and a brake shaft corresponding to the brake pad is movably arranged in the brake adjustment seat;

[0008] The sealing sleeve is fixed to the brake adjustment seat, and an inclined plane adjustment shaft that can rotate around its own axis is arranged in the sealing sleeve, the axial direction of the inclined plane adjustment shaft is parallel to the axial direction of the brake shaft, and the end surface of the inclined plane adjustment shaft is in contact with the two brake shafts;

[0009] The adjusting sleeve is connected to the sealing sleeve in an axially adjustable manner, the inclined plane adjusting shaft extends into the adjusting sleeve and is axially fixed to the adjusting sleeve, the inclined plane adjusting shaft is connected to a pull plate for driving the inclined plane adjusting shaft to rotate via a connecting shaft, and the pull plate is located on the outside of the adjusting sleeve.

[0010] Furthermore, the adjustment sleeve includes a core and a flange connected to the outer edge of the core, the core is embedded in the sealing sleeve and threadedly connected to the sealing sleeve, a preset distance is left between the flange and the end face of the sealing sleeve, and the flange is connected to the sealing sleeve by bolts.

[0011] Furthermore, the inclined plane adjustment shaft is rotatably connected to the adjustment sleeve via a rolling bearing.

[0012] Based on the above concept of the utility model, that is, how to achieve complete synchronous adjustment of the two brake shafts under the premise of using two brake shafts, is the key technical problem to be solved in this case. More specifically, how to use the same driving member to drive the two brake shafts at the same time, and also ensure that the two brake shafts are completely synchronized during the braking action. To this end, the creative design of this case is as follows:

[0013] The end surface of the inclined adjustment shaft in contact with the brake shaft is provided with an inclined structure, so that when the inclined adjustment shaft rotates with the action of the pull plate, it can drive the two brake shafts to move linearly synchronously in the direction toward the friction plate. In this process, the movement track of the end of the brake shaft on the inclined structure shows a climbing trend.

[0014] Furthermore, the inclined plane structure includes two inclined planes arranged in a group, and the two inclined planes are symmetrical when rotated 180° relative to the axis of the inclined plane adjustment shaft.

[0015] Furthermore, the slope surface is planar or spiral.

[0016] Furthermore, the slope structure also includes two second slope surfaces arranged in groups, the two second slope surfaces are symmetrical when rotated 180° relative to the axis of the slope adjustment shaft, the second slope surfaces are alternately arranged in the circumferential direction of the slope adjustment shaft, and the second slope surfaces are symmetrical to each other.

[0017] Among them, when the slope surface is planar, one of the preferred implementations of the slope structure is to set the second slope surface as an integrated structure coplanar with the slope surface, so that the slope structure is a V-shaped slope with an opening toward the brake shaft, which meets the requirements of cooperation with the brake shaft and is more conducive to the processing of the workpiece.

[0018] Furthermore, one end of the brake shaft close to the inclined plane adjustment shaft is configured as a ball head structure.

[0019] Furthermore, a sliding hole is provided in the brake adjustment seat for the brake shaft to slide along its axial direction, and the brake shaft is connected to the inner wall of the sliding hole through a sliding bearing.

[0020] Furthermore, the brake shaft and the brake adjustment seat are sealed by a seal located between the brake pad and the sliding bearing, preferably a sealing ring structure; the connection shaft and the adjustment sleeve are sealed, preferably a skeleton oil seal structure.

[0021] Furthermore, the connecting shaft is fixedly connected to the inclined plane adjustment shaft and the wire drawing plate respectively.

[0022] The beneficial effects of the utility model are:

[0023] 1. The utility model changes the existing technical thinking and adopts a parking brake structure in which a single brake shaft drives the brake pad. Instead, two independent brake pads and brake shafts corresponding to each other are arranged, and a connection relationship between an inclined adjustment shaft and a connecting shaft respectively adapted to each brake shaft is arranged, and connected with a cable plate, which can effectively increase the braking force and improve the parking brake effect of vehicles, especially engineering machinery.

[0024] 2. The utility model, by setting up the shape structure of the inclined plane adjustment shaft, especially its end surface structure close to the brake shaft, namely the inclined plane structure, can realize the complete synchronous adjustment of the two brake shafts under the premise of using two brake shafts. Specifically, the same driving member can drive the two brake shafts at the same time, and ensure the complete synchronization of the two brake shafts during the braking action, so as to ensure the enhanced braking effect under the use of two brake shafts.

[0025] 3. The utility model further provides an adjustment sleeve and its connection with the sealing sleeve and the inclined adjustment shaft. The adjustment sleeve and the sealing sleeve are axially adjustable. The distance between the adjustment sleeve and the sealing sleeve can be adjusted according to different needs and fixed again with bolts, thereby adjusting the braking clearance, ensuring the braking effect and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of embodiment 1 / 2 of the utility model;

[0027] Figure 2 It is a cross-sectional structural schematic diagram of embodiment 1 / 2 of the utility model;

[0028] Figure 3 , Figure 4 It is a three-dimensional structural schematic diagram of the inclined plane adjustment shaft of embodiment 1 / 2 of the utility model;

[0029] Figure 5 It is a three-dimensional structural schematic diagram of the inclined plane adjustment shaft of the embodiment 3 / 4 of the utility model;

[0030] Figure 6 It is a side view structural schematic diagram of the inclined plane adjustment shaft of the embodiment 3 / 4 of the utility model;

[0031] Figure 7 This is another side view of the structure of the inclined plane adjustment shaft of Embodiment 3 / 4 of the utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the utility model in use (with a brake disc);

[0033] In the figure: 1. brake fixing seat, 2. brake adjustment seat, 3. sealing sleeve, 31. threaded hole, 4. adjustment sleeve, 41. core, 42. flange, 421. through hole, 5. wire drawing plate, 6. skeleton oil seal, 7. connecting shaft, 8. disc spring, 9. single row tapered roller bearing, 10. first bolt, 11. inclined plane adjustment shaft, 12. sliding bearing, 13. brake shaft, 14. brake pad, 15. friction plate, 16. sealing ring, 17. brake disc, 18. second bolt, 19. third bolt, 20. slope surface, 21. second slope surface. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] Example 1

[0036] As attached Figure 1-4 As shown, the disc parking brake device of this embodiment includes a brake fixing seat 1, a brake adjusting seat 2, a friction plate 15 fixedly mounted on the brake fixing seat 1, and a brake plate 14 movably mounted on the brake adjusting seat, and also includes a sealing sleeve 3 and an adjusting sleeve 4. The brake fixing seat 1, the brake adjusting seat 2, the sealing sleeve 3, and the adjusting sleeve 4 are connected in sequence. Two brake plates 14 are provided and correspond to the friction plates 15 one by one. A space for placing a brake disc 17 is reserved between the brake plates 14 and the friction plates 15; wherein:

[0037] The brake adjusting seat 2 is fixed to the brake fixing seat 1, and a brake shaft 13 corresponding to the brake pad 14 is movably arranged in the brake adjusting seat 2; specifically in this embodiment, a sliding hole is arranged in the brake adjusting seat 2 for the brake shaft 13 to slide along its axial direction, and the brake shaft 13 is connected to the inner wall of the sliding hole through a sliding bearing 12.

[0038] The sealing sleeve 3 is fixed to the brake adjustment seat 2 , and a bevel adjustment shaft 11 that can rotate around its own axis is arranged in the sealing sleeve 3 . The axial direction of the bevel adjustment shaft 11 is parallel to the axial direction of the brake shaft 13 , and the end face of the bevel adjustment shaft 11 contacts the two brake shafts 13 .

[0039] The adjusting sleeve 4 is connected to the sealing sleeve 3 in an axially adjustable manner, the bevel adjusting shaft 11 extends into the adjusting sleeve 4 and is axially fixed to the adjusting sleeve 4, the bevel adjusting shaft 11 is connected to a pull plate 5 for driving the bevel adjusting shaft 11 to rotate via a connecting shaft 7, and the pull plate 5 is located on the outside of the adjusting sleeve 4.

[0040] Specifically in this embodiment, Figure 2 As shown, the inclined plane adjustment shaft 11 is rotatably connected to the adjustment sleeve 4 through a rolling bearing (single-row tapered roller bearing 9), so that it is more labor-saving when manipulating the inclined plane adjustment shaft 11 to achieve braking. The connecting shaft 7 is fixedly connected to the inclined plane adjustment shaft 11 through a second bolt 18, and the connecting shaft 7 is fixedly connected to the wire drawing plate 5 through a third bolt 19. The adjustment sleeve 4 includes a core 41 and a flange 42 connected to the outer edge of the core 41, the core 41 is embedded in the sealing sleeve 3 and threadedly connected to the sealing sleeve 3, a preset distance is left between the flange 42 and the end face of the sealing sleeve 3, and the flange 42 is connected to the sealing sleeve 3 through a first bolt 10.

[0041] The end surface of the inclined plane adjusting shaft 11 contacting the brake shaft 13 is provided with an inclined plane structure, so that when the inclined plane adjusting shaft 11 rotates with the movement of the cable pull plate 5, it can drive the two brake shafts 13 to move linearly synchronously in the direction toward the friction plate 15.

[0042] Specifically, the inclined plane structure includes two inclined planes 20 arranged in a group, and the two inclined planes 20 are symmetrically rotated 180° relative to the axis of the inclined plane adjustment shaft 11 to ensure the synchronization of the movement and amplitude of the two brake shafts 13 when the inclined plane adjustment shaft rotates. In this process, the movement trajectory of the end of the brake shaft on the inclined plane structure shows a climbing trend.

[0043] In this embodiment, the slope surface 20 is a plane. Figure 3 Shown (not including Figure 3 The second slope surface 21 in the embodiment of the present invention is not specifically limited to the slope length of the slope surface 20. Figure 8 As shown, the friction plate 15 and the brake pad 14 are respectively located on both sides of the brake disc 17. When the brake is not applied, the ends of the two brake shafts 13 are in contact with the bottom of the V-shaped slope. When the cable pull plate 5 is operated to apply the brake, the cable pull plate 5 is pulled to drive the connecting shaft 7 to rotate around its axis, thereby driving the slope adjustment shaft 11 to rotate a certain angle, such as 90°. Combined with the V-shaped slope at the end of the slope adjustment shaft 11, during the rotation process, the two brake shafts 13 are in a synchronous climbing state on the slope, that is, the slope adjustment shaft 11 moves along the slope. Figure 2As shown, the brake shaft 13 is squeezed in the direction close to the friction plate 1, so that it moves with the brake pad 14 toward the friction plate 1, until the brake pad 14 and the friction plate 15 are tightly clamped to the brake disc 17 to achieve braking. When the brake is released, the cable plate 5 is reset, and the brake shaft 13 is released from the resistance to the brake pad 14 and is in a free state. When the brake disc 17 rotates with the vehicle, the brake pad 14 and the brake shaft 13 are passively reset.

[0044] When the brake clearance needs to be adjusted, open the first bolt 10, and use the threaded connection relationship between the adjusting sleeve 4 and the sealing sleeve 3 and the reserved distance between the two. At this time, rotate the adjusting sleeve 4 to make it screw in or out a certain distance relative to the sealing sleeve 3. In this process, since the inclined plane adjusting shaft 11 and the adjusting sleeve 4 are axially fixed and the inclined plane adjusting shaft 11 and the adjusting sleeve 4 are rotationally connected, the inclined plane adjusting shaft 11 only moves linearly relative to the sealing sleeve 3 and does not rotate around its own axis, thereby adjusting the relative distance between the brake pad 14 and the friction pad 15 until it is adjusted to a suitable brake clearance; finally, use the first bolt 10 to fix the adjusting sleeve 4 and the sealing sleeve 3 again.

[0045] Example 2

[0046] In addition to all the structural features of Example 1, the slope structure of this embodiment further includes two second slope surfaces 21 arranged in a group. The two second slope surfaces 21 are symmetrically rotated 180° relative to the axis of the slope adjustment shaft 11. The second slope surfaces 21 and the slope surfaces 20 are alternately arranged in the circumferential direction of the slope adjustment shaft 11, and the second slope surfaces 21 and the slope surfaces 20 are symmetrical to each other. The purpose of setting this group of second slope surfaces 21 is to ensure that the pull plate can be applied regardless of whether it rotates forward or reversely when the actual rotation direction of the pull plate is not determined before assembly. After assembly, the rotation braking direction of the pull plate is often actually a fixed direction. At this time, the braking requirements can be met by the cooperation of the brake shaft and the slope surface 20 or the second slope surface 21.

[0047] Preferably, in this embodiment, the second slope surface 21 and the slope surface 20 are set as an integrated structure with a coplanar structure, that is, Figure 3 and Figure 4 As shown, the two form the same inclined surface, and the overall inclined surface structure is a V-shaped inclined surface with the opening facing the brake shaft 13, which is convenient for processing.

[0048] Example 3

[0049] The structure of this embodiment is basically the same as that of the first embodiment, except for the shape of the slope surface. The slope surface 20 of this embodiment is a spiral surface. Figure 5 , Figure 6 , Figure 7 Shown (not including Figure 5The second slope surface 21 in the embodiment is not specifically limited to the slope length of the slope surface 20. The principle is the same as that of the first embodiment, and the two brake shafts 13 are in contact with the two slope surfaces 20 arranged opposite to each other. Before braking, the two brake shafts 13 are in contact with the bottom of the slope surface 20. When the pull wire plate 5 is pulled to drive the connecting shaft 7 and the slope adjustment shaft 11 to rotate around their own axes, combined with the structure of the slope surface 20, during the rotation process, the two brake shafts 13 are in a synchronous climbing state on the two slope surfaces 20. Specifically, the brake shaft 13 is in a spiral climbing state on the slope surface 20; the slope adjustment shaft 11 squeezes the brake shaft 13 in the direction close to the friction plate 1, so that it moves with the brake pad 14 toward the friction plate 1, until the brake pad 14 and the friction plate 15 are tightly clamped to the brake disc 17 to achieve braking.

[0050] Example 4

[0051] In addition to having all the structural features of Embodiment 3, the slope structure of this embodiment further includes two second slope surfaces 21 arranged in groups. Figure 5 , Figure 6 , Figure 7 As shown, the two second slope surfaces 21 are symmetrical when rotated 180° relative to the axis of the slope adjustment shaft 11, and the second slope surfaces 21 and the slope surfaces 20 are arranged alternately in the circumferential direction of the slope adjustment shaft 11, and the second slope surfaces 21 and the slope surfaces 20 are symmetrical to each other. The purpose of setting this group of second slope surfaces 21 is to ensure that the pull plate can be applied regardless of whether it rotates forward or reversely when the actual rotation direction of the pull plate is not determined before assembly. After assembly, the rotation braking direction of the pull plate is often actually a fixed direction. At this time, the braking requirements can be met by the cooperation of the brake shaft and the slope surface 20 or the second slope surface 21.

[0052] On the basis of the above embodiments, in a preferred embodiment of the utility model, under the premise of satisfying the adjustment of the brake clearance, in order to facilitate the fixation of the adjustment sleeve to the sealing sleeve 3 through the first bolt 10, a threaded hole 31 for fixing the first bolt 10 can be provided at the end of the sealing sleeve 3 (there is no special restriction on the number of the threaded holes 31), and accordingly, the flange 42 is also provided with a ring-shaped array of through holes 421 whose number is a multiple of the threaded holes 31, corresponding to the threaded holes 31. The larger the multiple value, the higher the adjustment accuracy of the brake clearance.

[0053] When the brake clearance needs to be adjusted, the first bolt 10 is removed to release the fixing of the flange 42 and the sealing sleeve 3, and the adjusting sleeve 4 is rotated to be screwed in or out a certain distance relative to the sealing sleeve 3 by using the threaded connection between the adjusting sleeve 4 and the sealing sleeve 3. After the brake clearance is adjusted (at this time, the threaded hole 31 has a through hole 421 corresponding to it), the first bolt 10 is inserted into the through hole 421 of the flange 42 and the threaded hole 31 of the sealing sleeve 3 to fix the adjusting sleeve 4 and the sealing sleeve 3.

[0054] On the basis of the above embodiments, in a preferred embodiment of the utility model, in order to increase the adaptability with the inclined plane adjustment shaft 11, one end of the brake shaft 13 close to the inclined plane adjustment shaft 11 is set as a ball head structure, so that when the inclined plane adjustment shaft 11 rotates, the brake shaft 13 can smoothly perform a climbing action on the inclined plane.

[0055] On the basis of the above embodiments, in a preferred embodiment of the present invention, in order to improve the sealing performance of the overall structure and prevent dust and rust, the brake shaft 13 and the brake adjustment seat 2 are sealed by a sealing ring 16 located between the brake pad 14 and the sliding bearing 12. In addition, the connecting shaft 7 and the adjustment sleeve 4 are sealed by a skeleton oil seal 6.

[0056] In this solution, by setting two brake pads 14 and the matching brake shaft 13, inclined adjustment shaft, connecting shaft, and cable plate, the braking force can be effectively increased, and the parking brake effect of vehicles, especially engineering machinery, can be improved. By setting the adjustment sleeve and its connection with the sealing sleeve and the inclined adjustment shaft, the adjustment sleeve and the sealing sleeve are axially adjustable, and the distance between the adjustment sleeve and the sealing sleeve can be adjusted according to different needs and fixed again with bolts, and then adjusted to a suitable braking gap, ensuring the braking effect and improving work efficiency. The overall structure is compact, the components are well sealed, and dust and oil pollution can be effectively avoided.

Claims

1. A disc parking brake device, comprising a brake fixing seat (1), a brake adjusting seat (2), a friction plate (15) fixedly mounted on the brake fixing seat (1), and a brake plate (14) movably mounted on the brake adjusting seat (2), characterized in that: It also includes a sealing sleeve (3) and an adjusting sleeve (4), wherein the brake fixing seat (1), the brake adjusting seat (2), the sealing sleeve (3), and the adjusting sleeve (4) are connected in sequence, and two brake pads (14) are provided and correspond one to one with the friction pads (15); The brake adjustment seat (2) is fixed to the brake fixing seat (1), and a brake shaft (13) corresponding to the brake pad (14) is movably arranged in the brake adjustment seat (2); The sealing sleeve (3) is fixed to the brake adjustment seat (2), and a bevel adjustment shaft (11) that can rotate around its own axis is arranged in the sealing sleeve (3), the axial direction of the bevel adjustment shaft (11) is parallel to the axial direction of the brake shaft (13), and the end surface of the bevel adjustment shaft (11) is in contact with the two brake shafts (13); The adjusting sleeve (4) is connected to the sealing sleeve (3) in an axially adjustable manner, the inclined plane adjusting shaft (11) extends into the adjusting sleeve (4) and is fixed to the adjusting sleeve (4) in its axial direction, the inclined plane adjusting shaft (11) is connected to a pull-wire plate (5) for driving the inclined plane adjusting shaft (11) to rotate via a connecting shaft (7), and the pull-wire plate (5) is located outside the adjusting sleeve (4); The end surface of the inclined plane adjustment shaft (11) in contact with the brake shaft (13) is provided with an inclined plane structure, so that when the inclined plane adjustment shaft (11) rotates with the movement of the wire pulling plate (5), the two brake shafts (13) can be driven to move linearly synchronously in the direction toward the friction plate (15).

2. The disc parking brake device according to claim 1, characterized in that: The adjusting sleeve (4) comprises a core (41) and a flange (42) connected to the outer edge of the core (41); the core (41) is embedded in the sealing sleeve (3) and is threadedly connected to the sealing sleeve (3); a preset distance is left between the flange (42) and the end surface of the sealing sleeve (3); the flange (42) is connected to the sealing sleeve (3) via a first bolt (10).

3. The disc parking brake device according to claim 1 or 2, characterized in that: The inclined plane adjustment shaft (11) is rotationally connected to the adjustment sleeve (4) via a rolling bearing.

4. The disc parking brake device according to claim 1, characterized in that: The inclined plane structure comprises two inclined planes (20) arranged in a group, and the two inclined planes (20) are symmetrical when rotated 180 degrees relative to the axis of the inclined plane adjustment shaft (11).

5. The disc parking brake device according to claim 4, characterized in that: The slope surface (20) is in the shape of a plane or a spiral surface.

6. The disc parking brake device according to claim 4 or 5, characterized in that: The inclined plane structure further comprises two second inclined planes (21) arranged in a group, the two second inclined planes (21) are symmetrical when rotated 180 degrees relative to the axis of the inclined plane adjustment shaft (11), the second inclined planes (21) and the inclined planes (20) are alternately arranged in the circumferential direction of the inclined plane adjustment shaft (11), and the second inclined planes (21) and the inclined planes (20) are symmetrical to each other.

7. The disc parking brake device according to any one of claims 1, 4 and 5, characterized in that: One end of the brake shaft (13) close to the inclined plane adjustment shaft (11) is arranged as a ball head structure.

8. The disc parking brake device according to claim 6, characterized in that: One end of the brake shaft (13) close to the inclined plane adjustment shaft (11) is arranged as a ball head structure.

9. The disc parking brake device according to claim 1, characterized in that: The brake adjustment seat (2) is provided with a sliding hole for the brake shaft (13) to slide along its axial direction, and the brake shaft (13) is connected to the inner wall of the sliding hole through a sliding bearing (12).

10. The disc parking brake device according to claim 9, characterized in that: The brake shaft (13) and the brake adjustment seat (2) are sealed via a sealing member located between the brake pad (14) and the sliding bearing (12), and the connecting shaft (7) and the adjustment sleeve (4) are sealed.

11. The disc parking brake device according to claim 1, characterized in that: The connecting shaft (7) is fixedly connected to the inclined plane adjustment shaft (11) and the wire drawing plate (5) respectively.

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